<!DOCTYPE html>
<html>
  <meta charset="UTF-8">
  <style>
    td {
      width: 100px;
    }
  </style>
  <body>
    <table border="1">
      <tbody>
        <tr><td rowspan="3">A</td><td>B</td></tr>
        <tr><td>C</td></tr>
        <tr><td>D</td></tr>
      </tbody>
      <tbody>
        <tr><td>E</td><td>F</td></tr>
      </tbody>
    </table>
  </body>
</html>

